i need it to last min of 6 300ft drags my friend thinks his stock warrior can beat my moded 300ex. racing carb, procom cdi, fmf megamaxII

 

zettler450r how long did your fix last did you do it the way the directions say let it sit for 4hours at 72f low temps take longer. puting it on and waiting 10min weakins it.

 

if the damage is caused by a losse chain if you fix the damage with jb weld and dont let chain come losse again the crack shouldnt get biger and the epoxy shouldnt fail

 

i would buy a new case anyway its not worth the head ache

 

An ounce of prevention is worth a pound of cure
Buy a new case!
The temp fix is just to get you out of the woods!
Don't forget that the expansion and contraction of the metel at different temperature changes, the epoxy will not follow the same and it will leak again..

You will forget about it and this time you may not be so luck NO OIL@#$%^ and endup having a full engine job done with alll the trimmings of the melted parts.

You try to save a dime you will end up spending more than a dollar!

 

I onced used jb weld to glue in a spark plug in a honda 50 for the kids. They striped the threads out. Was only going to use it as a temporary fix so the kids could ride until i changed the head on it. That plug never did come out. I thought the hot\cold cycles would make it come out but it did not. my $.02

 

If I read between the lines! you may be wondering what the difference is?

Yep there is a slight difference in sealing an open crack then it is sealing a threaded object to it's mating hole.
Presure is surounding the plug force against the hole in between the leftover threads where the sealent has no where to go easily!
Where an open crack is sort of floating just depending on the bond on one side of the dried sealent.
Metel expansion factor is greater than plastics. Other wise the manufacturers would use epoxy only to put the motor cases together instead of gaskets and screws.

I think almost the same thing can apply to a rusted lug nut verses two metal plates rusted together. Which is easier to seperate without distruction.

If you applied more heat, (torch) to the head around the area of the plug the epoxy would of broken down between the remaining thread area and would of released I think a heli coil would of made a better temp fix there.

In your case it ended up being a true temporary fix in the long run.
You ended up doing the correct course of action!

 

like i said earlyier all i need is a temp fix for 6 300 ft drags if it breaks again doesnt matter im putting a sportsbike motor in some. as for the fix im putting it on anyway i have nothing to lose but oil. when that fails im getting it welded. after that is a choped frame and a sports bike motor. i see putting jb weld on as a test to see if its as strong as people say it is.

 

OKay Good luck sir
Racing Huh! Please be careful and hope you do not redefine the phrase Crack Kills, and fish tail.
Those back wheels lockup at hi speeds as the engine blows it might be the ride of a lifetime!

 

Before you go chopping your frame and getting all excited to put in a crotch rocket engine I would get everything planned out and make sure you can tig weld and fabricate a whole lot of parts and your frame...there is a lot more work then just saying you chop and weld new pieces in the frame...somethings just to consider before you go chopping your frame...go talk to some of the guys in the brp forum and talk to them about it.